[ffigen] Migrate to GitHub Actions (#124)

diff --git a/pkgs/ffigen/.github/workflows/test-package.yml b/pkgs/ffigen/.github/workflows/test-package.yml
new file mode 100644
index 0000000..c4f98d2
--- /dev/null
+++ b/pkgs/ffigen/.github/workflows/test-package.yml

@@ -0,0 +1,64 @@
+name: Dart CI
+
+on:
+  # Run on PRs and pushes to the default branch.
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  schedule:
+    - cron: "0 0 * * 0"
+
+env:
+  PUB_ENVIRONMENT: bot.github
+
+jobs:
+  # Check code formatting and static analysis on a single OS (linux)
+  # against Dart stable.
+  analyze:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        sdk: [stable]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dart-lang/setup-dart@v0.1
+        with:
+          channel: ${{ matrix.sdk }}
+      - id: install
+        name: Install dependencies
+        run: dart pub get
+      - name: Check formatting
+        run: dart format --output=none --set-exit-if-changed .
+        if: always() && steps.install.outcome == 'success'
+      - name: Analyze code
+        run: dart analyze --fatal-infos
+        if: always() && steps.install.outcome == 'success'
+
+  test:
+    needs: analyze
+    # This job requires clang-10 which is the default on 20.04
+    runs-on: ubuntu-20.04 
+    steps:
+      - uses: actions/checkout@v2
+      - uses: dart-lang/setup-dart@v0.1
+        with:
+          channel: stable
+      - name: Install dependencies
+        run: dart pub get  
+      - name: Install libclang-10-dev
+        run: sudo apt-get install libclang-10-dev
+      - name: Setup ffigen
+        run: dart pub run ffigen:setup
+      - name: Build test dylib
+        run: cd test/native_test && dart build_test_dylib.dart && cd ../..
+      - name: Run VM tests
+        run: dart test --platform vm
+      - name: Collect coverage
+        run: ./tool/travis.sh
+      - name: Upload coverage
+        uses: coverallsapp/github-action@v1.1.2
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: lcov.info

diff --git a/pkgs/ffigen/.travis.yml b/pkgs/ffigen/.travis.yml
deleted file mode 100644
index 6f311a4..0000000
--- a/pkgs/ffigen/.travis.yml
+++ /dev/null

@@ -1,31 +0,0 @@
-language: dart
-dart:
-- stable
-# Only building master means that we don't run two builds for each pull request.
-dart_task:
-- test: --platform vm
-- dartanalyzer
-- dartfmt
-branches:
-  only: [master]
-cache:
-  directories:
-    - $HOME/.pub-cache
-before_install:
-  # Install libclang-dev.
-  - sudo add-apt-repository "deb http://apt.llvm.org/xenial/ llvm-toolchain-xenial-10 main"
-  - wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key|sudo apt-key add -
-  - sudo apt-get update
-  - sudo apt-get install clang-10 libclang-10-dev
-  # Use clang from installed llvm.
-  - export PATH="/usr/lib/llvm-10/bin:$PATH"
-
-before_script:
-  - 'dart pub run ffigen:setup'
-  - cd test/native_test && dart build_test_dylib.dart && cd ../..
-
-matrix:
-  include:
-  - dart: stable
-    script: ./tool/travis.sh
-    name: Collect and report coverage.

diff --git a/pkgs/ffigen/README.md b/pkgs/ffigen/README.md
index a48185c..625acd2 100644
--- a/pkgs/ffigen/README.md
+++ b/pkgs/ffigen/README.md

@@ -1,5 +1,5 @@
 [![pub package](https://img.shields.io/pub/v/ffigen.svg)](https://pub.dev/packages/ffigen)
-[![Build Status](https://travis-ci.org/dart-lang/ffigen.svg?branch=master)](https://travis-ci.org/dart-lang/ffigen)
+[![Build Status](https://github.com/dart-lang/ffigen/workflows/Dart%20CI/badge.svg)](https://github.com/dart-lang/ffigen/actions?query=workflow%3A"Dart+CI")
 [![Coverage Status](https://coveralls.io/repos/github/dart-lang/ffigen/badge.svg?branch=master)](https://coveralls.io/github/dart-lang/ffigen?branch=master)
 
 Experimental binding generator for [FFI](https://dart.dev/guides/libraries/c-interop)

diff --git a/pkgs/ffigen/tool/travis.sh b/pkgs/ffigen/tool/travis.sh
index 987955b..341aada 100755
--- a/pkgs/ffigen/tool/travis.sh
+++ b/pkgs/ffigen/tool/travis.sh

@@ -7,13 +7,10 @@
 # Fast fail the script on failures.
 set -e
 
-# Gather coverage and upload to Coveralls.
+# Gather coverage.
 pub global activate remove_from_coverage
 pub global activate dart_coveralls
 # Generate coverage report.
 pub global run dart_coveralls calc test/test_coverage.dart > lcov.info
 # Remove extra files from coverage report.
 pub global run remove_from_coverage -f lcov.info -r ".pub-cache"
-# Upload to coveralls.
-gem install coveralls-lcov
-coveralls-lcov lcov.info